Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 25 - Baseband systems
Patents for H04L 25 - Baseband systems (55,083)
12/1991
12/09/1991CA2083147A1 Multimedia high speed network
12/04/1991EP0459687A2 Traveling wave type transversal equalizer
12/03/1991US5070516 Method and apparatus for reducing noise on a signal encodable on a plurality of predetermined levels
12/03/1991CA1292817C Method and apparatus for transmitting a sychronous data signal on a transmission medium on which the transmission rate is greater than the data signal bit rate
12/02/1991CA2043678A1 Method for processing signals for signal transmission in the base band
11/1991
11/29/1991CA2043144A1 Decision feedback equalizer with offset allowance
11/27/1991EP0458695A1 Method for equalizing a received burst signal
11/27/1991EP0458390A2 Data transmission system and apparatus providing multi-level differential signal transmission
11/27/1991EP0458097A2 Data transmission system
11/26/1991US5068874 Spectrally efficient digital fm modulation system
11/26/1991US5068873 Equalizer
11/26/1991US5068545 Digital/frequency input for industrial control applications
11/26/1991CA1292525C2 Digital demodulation system
11/26/1991CA1292521C Bus transmitter having controlled trapezoidal slew rate
11/26/1991CA1292520C Jitter-invariant switched capacitor pulse shaper
11/21/1991EP0457595A1 Communication apparatus for transmitting and receiving communication signals through common transmission line
11/21/1991EP0456930A1 Non-reflecting transmission line termination
11/21/1991EP0456857A1 Digital circuit with potential compensation between two signal conductors
11/19/1991US5067138 Phase-locked-loop circuit and bit-detection arrangement comprising such a phase-locked-loop circuit
11/19/1991US5067114 Correlation for combinational coded telemetry
11/19/1991US5067076 Circuit arrangement for serial data transfer
11/19/1991CA1292288C Method for generating a correction signal in a digital clock recovery device
11/14/1991WO1991017607A1 A method of equalization in a receiver of signals having passed a transmission channel
11/14/1991DE4015041A1 Serial data transmission procedure - using start=stop principle in async. digital bus system
11/14/1991CA2019196A1 Non-reflecting transmission line termination
11/13/1991EP0456419A2 Apparatus for driving a plurality of data output lines
11/13/1991EP0456242A1 Automatic equalizer and semiconductor integrated circuit containing such an equalizer
11/13/1991EP0455910A2 Distortion compensation by adaptively setting a decision threshold, for fibre optic systems
11/13/1991EP0455893A1 Telecommunication line circuit
11/13/1991EP0193592B1 Method and apparatus for processing digital signals prior to recording
11/12/1991US5065410 Method and arrangement for setting an amplitude equalization characteristic on an equalizer for use in a modem
11/12/1991US5065396 Inverse multiplexer and demultiplexer techniques
11/12/1991US5065133 Method and apparatus converting digital signals to analog signals and simultaneous transmission of ac power and signals over wire conductors
11/12/1991CA2041957A1 Telecommunication line circuit
11/09/1991CA2033850A1 Violation control circuit in isdn
11/06/1991EP0454727A1 Active signalling transmitter control.
11/05/1991US5063595 Optical communications network
11/05/1991US5063576 Coding and decoding method for asynchronous data signals and an apparatus therefor
11/05/1991US5063575 Apparatus and method for proper byte alignment in an encoder/decoder
11/05/1991US5063573 Method for the equalization of dispersive, linear or approximately linear channels for the transmission of digital signals and arrangement for carrying out the method
11/05/1991CA1291832C Higher order digital transmission system including a multiplexer and a demultiplexer
10/1991
10/31/1991WO1991016778A1 System to prevent a scrambler from generating undesired symbols
10/31/1991WO1991016774A1 Stuffing process and device for reducing waiting time jitter
10/30/1991EP0454505A2 Multipath transmission system
10/30/1991EP0454445A2 Waveform equalizer using a neural network
10/30/1991EP0453814A2 Adaptive channel impulse response estimation system using maximum likelihood sequence estimation
10/29/1991US5062152 Pcm signal coding
10/28/1991CA2041309A1 Multipath transmission system
10/23/1991EP0453201A1 Control for adaptive equalizer
10/23/1991EP0453063A2 Decoding biphase signals by measuring pulse length
10/22/1991US5060088 Adaptive equalization for recording systems using partial-response signaling
10/22/1991US5059918 Procedure and apparatus for amplification of a burst signal
10/22/1991US5059834 Circuit device for eliminating noise from an input signal independent of time of arrival of noise or noise width
10/22/1991US5059830 Integrated circuit using bus driver having reduced area
10/17/1991WO1991015903A1 Device for evaluating signal transmission performance of optical communication equipment
10/17/1991WO1991015900A1 Trellis precoding for fractional bits/baud
10/17/1991DE4011238A1 Data transmission system with controlled transmission characteristic - uses linear and nonlinear digital filters inserted in transmission path
10/16/1991EP0451754A1 Digital autoadaptive equalizer
10/16/1991EP0451276A1 Serial signal transmission apparatus and method of controlling determination of polarity thereof
10/15/1991US5058156 Network interface and communication terminal
10/15/1991US5058131 Transmitting high-bandwidth signals on coaxial cable
10/15/1991US5058130 Jitter equalizer for digital transmission filter
10/15/1991US5058129 Two-wire digital transmission loop
10/11/1991WO1991015910A1 Method of synchronising the pseudo-random binary sequence in a descrambler
10/09/1991EP0450148A2 Decoding circuit for inhibiting error propagation
10/09/1991EP0276277B1 Data communications system having noise reduction means
10/09/1991EP0224556B1 Ensemble modem structure for imperfect transmission media
10/08/1991US5056117 Decision feedback equalization with trellis coding
10/08/1991US5056116 Data demodulation apparatus
10/08/1991US5056114 Method and apparatus for decoding Manchester encoded data
10/08/1991US5055795 Traveling wave type transversal equalizer
10/02/1991EP0449623A2 Integrated circuit device for RS-232C line receiver
10/02/1991EP0449327A2 Noise-immune space diversity receiver
10/02/1991EP0448881A2 Interference suppression system
10/02/1991EP0448809A2 A bit serial viterbi decoder add/compare/select array
10/02/1991EP0448758A1 Method for the determination of FIR filter coefficients in equalizers
10/02/1991EP0448754A1 Two-wire-four-wire converter
10/02/1991EP0448753A1 Two-wire-four-wire converter
10/01/1991US5054069 Apparatus for scrambling/descrambling data by word-by-word processing
10/01/1991CA1290062C Data transmission system
09/1991
09/25/1991EP0448352A2 Transversal equalizer
09/25/1991EP0448322A2 Automatic extraction of pulseparametrics from multi-valued functions
09/25/1991EP0448251A2 Demodulating system capable of accurately equalizing received signals using error correction codes
09/25/1991EP0448152A1 Remote control system, and transmitter and receiver for such a system
09/25/1991EP0448069A2 Diversity circuit and frame phase (or sampling timing) estimation circuit using the diversity circuit
09/24/1991US5052023 Method and apparatus for received signal equalization
09/24/1991US5052022 Repeater and PLL circuit
09/24/1991US5052021 Digital signal decoding circuit and decoding method
09/24/1991US5052000 Technique for improving the operation of decision feedback equalizers in communications systems utilizing error correction
09/24/1991US5051980 Data communication interface device
09/24/1991US5051616 Zero crossing detector arrangements
09/21/1991WO1991015064A1 Cable television radio frequency return method
09/21/1991CA2078561A1 Cable television radio frequency return method
09/20/1991CA2038460A1 Transversal equalizer
09/19/1991WO1991014328A1 Overspeed data rate adjustment method and apparatus in an asynchronous data stream
09/19/1991WO1991014327A1 Circuits for the separate potential transmission of pulses of any length or frequency for driving transitor circuits
09/19/1991WO1991014319A1 Digital data transmission system
09/18/1991EP0446827A1 Terminal installation for asynchronous network
09/18/1991EP0446745A2 Viterbi algorithm outputting a plurality of most probable sequences in descending probability order
09/18/1991CA2036865A1 Interference suppression
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